change groud pattern
add animation for game logo
add new canvas transform 'colormask'
new function getCanvasDC(...)
remove function CanvasDrawSelf
canvas transform support attribute 'scale'
draw ground with scaled pattern
add new canvas transform 'offset'
rewording
add new canvas transform 'replacecolor'
GAME should initilize after RES loaded
temporarily remove transform 'replacecolor'
draw text from data.font.res & data.font.map
add font for boss countdown
add colormap transform